Other Liabilities - Summary of Other Liabilities (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
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|---|---|---|---|---|
| Miscellaneous liabilities [abstract] | ||||
| Accrued expenses | ¥ 1,049,758 | ¥ 864,903 | ||
| Unearned income | 80,853 | 72,566 | ||
| Financial guarantees and other credit-related contingent liabilities | 53,954 | 55,094 | ||
| Due to trust account | 956,170 | 1,041,661 | ||
| Payables to brokers, dealers and customers for securities transactions | 7,872,849 | 3,089,000 | ||
| Payables related to credit card services | 1,560,347 | 1,439,564 | ||
| Obligations from factoring transactions | 189,179 | 233,589 | ||
| Retirement benefit liabilities | 35,829 | 34,996 | ||
| Guarantee deposits and derivative cash collateral received | 2,038,668 | 1,326,187 | ||
| Liabilities directly associated with the assets held for sale | [1] | 422,621 | ||
| Others | 2,507,156 | 2,663,881 | ||
| Total other liabilities | ¥ 16,767,384 | ¥ 10,821,441 | ||
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